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    Copyright
    Dedication
    Preface
    Pt. I. Commands and Shells
    Ch. 1. Introduction
    Ch. 2. Unix Commands
    Introduction
    Alphabetical Summary of Common Commands
    aclocal
    apropos
    ar
    as
    at
    atq
    atrm
    autoconf
    autoheader
    automake
    awk
    banner
    basename
    bash
    batch
    bc
    biff
    bison
    bzip2
    cal
    calendar
    cancel
    cat
    cc
    cd
    chgrp
    chmod
    chown
    cksum
    clear
    cmp
    comm
    cp
    cpio
    crontab
    csh
    csplit
    ctags
    curl
    cut
    date
    dc
    dd
    df
    diff
    diff3
    dig
    dirname
    dos2unix
    du
    echo
    ed
    egrep
    eject
    emacs
    env
    etags
    evim
    ex
    expand
    expr
    factor
    false
    fdformat
    fgrep
    file
    find
    finger
    flex
    fmt
    ftp
    g++
    gcc
    gcore
    gdb
    getconf
    getopts
    gettext
    ghostscript
    gprof
    grep
    groff
    groups
    gs
    gunzip
    gzcat
    gzip
    head
    hexdump
    hostname
    iconv
    id
    info
    join
    kill
    ksh
    ld
    ldd
    less
    lex
    link
    ln
    locale
    locate
    logger
    login
    logname
    look
    lp
    lpq
    lpr
    lprm
    lpstat
    ls
    m4
    mail
    mailx
    make
    man
    mesg
    mkdir
    mkisofs
    mktemp
    more
    mount
    msgfmt
    mv
    nawk
    nice
    nl
    nm
    nohup
    nroff
    od
    passwd
    paste
    patch
    pathchk
    pax
    perl
    pr
    printenv
    printf
    ps
    pwd
    python
    r Commands
    rcs
    reset
    rm
    rmdir
    rsync
    samba
    scp
    screen
    script
    sdiff
    sed
    sftp
    sh
    size
    sleep
    soelim
    sort
    spell
    split
    ssh
    ssh-add
    ssh-agent
    ssh-keygen
    strings
    strip
    stty
    su
    tail
    talk
    tar
    tcsh
    tee
    telnet
    test
    time
    touch
    tr
    troff
    true
    tset
    tty
    type
    umask
    uname
    umount
    unexpand
    uniq
    units
    unix2dos
    unzip
    uptime
    users
    uudecode
    vi
    view
    vim
    vimdiff
    w
    wait
    wc
    whatis
    which
    who
    whoami
    xargs
    xgettext
    yacc
    zcat
    zip
    zipinfo
    Alphabetical Summary of Solaris Commands
    Alphabetical Summary of GNU/Linux Commands
    Alphabetical Summary of Mac OS X Commands
    Alphabetical Summary of Java Commands
    Ch. 3. The Unix Shell: An Overview
    Ch. 4. The Bash and Korn Shells
    Ch. 5. tcsh: An Extended C Shell
    Ch. 6. Package Management
    Pt. II. Text Editing and Processing
    Pt. III. Software Development
    Pt. IV. Commands and Shells
    Colophon
    Index
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    printenv
        printenv [variable]

    Print values of all environment variables or, optionally, only the specified variable. The more standard alternative, env, doesn't let you view just one variable, but it lets you redefine them. On Solaris, printenv is in /usr/ucb.


      

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